MR damper performance for shock isolation

The paper is focused on the shock isolation performance of a drivers seat whose suspension is completed with a linear magnetorheological fluid damper (MR damper). The aim of experimental investigations was to recognize the MR damper performance against shock effects. The experiments were performed on a linear damper of RD-1005-3 series manufactured by Lord Corporation operating in open loop and closed-loop system configurations under shock displacement-inputs (rounded pulses and square waves). In the first case, the MR damper was operating as a passive damper and in the second case, as a controllable damper for which real-time controllers were developed in the MATLAB/Simulink environment. The system performance for shock isolation was evaluated basing on measured system responses.